I have the Gong wing and a 65cm mast. The wing is huge, but will foil at very low speed. Top speed feels slow but “fast enough”. Foil breaches on the 65cm mast are mostly saveable - I’m not used to anything less than 90cm. The alloy fuselage and mast is heavy, certainly compared to my old Horue H13 but when underway I don’t notice.

Yesterday first tests, and big schoock. Levitation practically without speed
Minimum speed is very very slow. Comfortable and stable cruising .
Easy turns with minimum speed. One cons - weight
Fuselage with wings is heavy - 3 kg
During flying with the wind and waves direction , I can pump without power on the kite.
I'm very happy